diff --git a/dashboard.py b/dashboard.py
index 5c23018..5314d5b 100644
--- a/dashboard.py
+++ b/dashboard.py
@@ -537,11 +537,12 @@ def toggle_ds(v):
     Input("button-calc-gha1", "n_clicks"),
     State("cb-ana-1", "value"),
     State("cb-num-1", "value"),
+    State("cb-stoch-1", "value"),
     State("cb-approx-1", "value"),
     prevent_initial_call=True,
 )
-def gha1_method_hint(n, a, nu, ap):
-    any_on = any("on" in (v or []) for v in (a, nu, ap))
+def gha1_method_hint(n, a, nu, st, ap):
+    any_on = any("on" in (v or []) for v in (a, nu, st, ap))
     return "" if any_on else html.Span("Bitte Berechnungsverfahren wählen.", style={"color": "red"})
 
 # -- GHA 1 ---
@@ -670,16 +671,15 @@ def compute_gha1_num(n1, cb_num, n_in, beta0, lamb0, s, a0, ax, ay, b):
     State("input-ax", "value"),
     State("input-ay", "value"),
     State("input-b", "value"),
-    State("method-checklist-1", "value"),
     prevent_initial_call=True,
 )
-def compute_gha1_stoch(n1, cb_stoch, n_in, beta0, lamb0, s, a0, ax, ay, b, method1):
+def compute_gha1_stoch(n1, cb_stoch, n_in, beta0, lamb0, s, a0, ax, ay, b):
     if not n1:
         return no_update, no_update
     if "on" not in (cb_stoch or []):
         return "", None
 
-    n_in = int(n_in) if n_in else 100
+    n_in = int(n_in) if n_in else 1000
 
     ell = EllipsoidTriaxial(ax, ay, b)
     beta_rad = wu.deg2rad(float(beta0))
@@ -687,17 +687,10 @@ def compute_gha1_stoch(n1, cb_stoch, n_in, beta0, lamb0, s, a0, ax, ay, b, metho
     alpha_rad = wu.deg2rad(float(a0))
     s_val = float(s)
 
-    betas, lambs, alphas, S_real = gha1_ES(
-        beta_rad, lamb_rad, alpha_rad,
-        s_val,
-        10000,
-        ell
-    )
-    beta1_stoch = betas[-1]
-    lamb1_stoch = lambs[-1]
+    P1_stoch, alpha = gha1_ES(ell, beta0=beta_rad, omega0=lamb_rad, alpha0=alpha_rad, s_total=s_val, maxSegLen=n_in)
 
     P0 = ell.ell2cart(beta_rad, lamb_rad)
-    P1_stoch = ell.ell2cart(beta1_stoch, lamb1_stoch)
+    beta1_stoch, lamb1_stoch = ell.cart2ell(P1_stoch)
 
     out = html.Div([
         html.Strong("Stochastisch: "),